Thanks.
Pretty, but as you say, I don’t need the 3D rendering, so I’m not sure they’ll add anything to my workflow.
(Might download them anyway. 
)
At first I thought the 3D view was a bit of a gimmick, even considered uninstalling all the 3D models to save some space. But later I changed my mind, and I find it actually useful for PCB design. It gives a quite good overview of whether silkscreen texts are obscured by high parts such as electrolytic capacitors, and for positioning texts (and judging readability in other occasions such as in between the pins of a male 90 degree PCB header. You can also see whether you have some room to poke your soldering iron in between parts for soldering.
Think twice. They’re enormous and slow library loading to a crawl.
Well, that is true for many STEP/etc models but, most of my models are made correctly and are efficient… two examples
This is like circuit boards from the 1950s or 1960s. Could you design it as a two-layer board, primarily on the bottom layer? Export the bottom layer to your CNC. Then use the Top layer as a reference for installing wires.
Tom